From owner-freebsd-wireless@FreeBSD.ORG  Sun Aug 11 16:50:01 2013
Return-Path: <owner-freebsd-wireless@FreeBSD.ORG>
Delivered-To: freebsd-wireless@smarthost.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTP id CCACB6AB
 for <freebsd-wireless@smarthost.ysv.freebsd.org>;
 Sun, 11 Aug 2013 16:50:01 +0000 (UTC)
 (envelope-from gnats@FreeBSD.org)
Received: from freefall.freebsd.org (freefall.freebsd.org
 [IPv6:2001:1900:2254:206c::16:87])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (No client certificate requested)
 by mx1.freebsd.org (Postfix) with ESMTPS id B85032C92
 for <freebsd-wireless@smarthost.ysv.freebsd.org>;
 Sun, 11 Aug 2013 16:50:01 +0000 (UTC)
Received: from freefall.freebsd.org (localhost [127.0.0.1])
 by freefall.freebsd.org (8.14.7/8.14.7) with ESMTP id r7BGo1u5048072
 for <freebsd-wireless@freefall.freebsd.org>; Sun, 11 Aug 2013 16:50:01 GMT
 (envelope-from gnats@freefall.freebsd.org)
Received: (from gnats@localhost)
 by freefall.freebsd.org (8.14.7/8.14.7/Submit) id r7BGo1Qt048071;
 Sun, 11 Aug 2013 16:50:01 GMT (envelope-from gnats)
Date: Sun, 11 Aug 2013 16:50:01 GMT
Message-Id: <201308111650.r7BGo1Qt048071@freefall.freebsd.org>
To: freebsd-wireless@FreeBSD.org
Cc: 
From: Julio Merino <julio@meroh.net>
Subject: Re: kern/181100: [bwi] Turning up bwi0 crashes / deadlocks the kernel
X-BeenThere: freebsd-wireless@freebsd.org
X-Mailman-Version: 2.1.14
Precedence: list
Reply-To: Julio Merino <julio@meroh.net>
List-Id: "Discussions of 802.11 stack,
 tools device driver development." <freebsd-wireless.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-wireless>, 
 <mailto:freebsd-wireless-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-wireless>
List-Post: <mailto:freebsd-wireless@freebsd.org>
List-Help: <mailto:freebsd-wireless-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-wireless>, 
 <mailto:freebsd-wireless-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 11 Aug 2013 16:50:01 -0000

The following reply was made to PR kern/181100; it has been noted by GNATS.

From: Julio Merino <julio@meroh.net>
To: bug-followup@freebsd.org, julio+host-mastodon-jmmv@meroh.net
Cc:  
Subject: Re: kern/181100: [bwi] Turning up bwi0 crashes / deadlocks the kernel
Date: Sun, 11 Aug 2013 12:40:56 -0400

 I rebuilt a kernel with WITNESS enabled and got the following
 stacktrace, which probably sheds some useful details.  Copying by hand
 so omitting addresses:
 
 Sleeping on "fwload" with the following non-sleepable locks held:
 exclusive sleep mutex bwi0 (network driver) r = 0 (0x...) locked @
 /usr/src/sys/modules/bwi/../../dev/bwi/if_bwi.c:1313
 KDB: stack backtrace:
 0x...: at .kdb_backgrace
 0x...: at ._witness_debugger
 0x...: at .witness_warn
 0x...: at ._sleep
 0x...: at .firmware_get
 0x...: at .bwi_mac_init
 0x...: at .bwi_init_statechg
 0x...: at .bwi_ioctl
 0x...: at .parent_updown
 0x...: at .taskqueue_run_locked
 0x...: at .taskqueue_thread_loop
 0x...: at .fork_exit
 0x...: at .fork_tramploline
 0x...: at fffffffffffffffc
 bwi0: firmware rev 0x0127, patch level 0x000e
 panic: rate 130 is basic/mcs?
 cpuid = 0
 KDB: stack backtrace:
 0x...: at .kdb_backtrace
 0x...: at .vpanic
 0x...: at .kassert_panic
 0x...: at .bwi_mac_set_ackrates
 0x...: at .bwi_mac_init
 0x...: at .bwi_init_statechg
 0x...: at .bwi_ioctl
 0x...: at .parent_updown
 0x...: at .taskqueue_run_locked
 0x...: at .taskqueue_thread_loop
 0x...: at .fork_exit
 0x...: at .fork_trampoline
 0x...: at fffffffffffffffc
 KDB: enter: panic
 [ thread pid 0 tid 100100 ]
 Stopped at 0x...
 
 -- 
 Julio Merino / @jmmv